Brand: CoffMeter A1 Color: Black I bought this when I got into coffee, but I've never used it, so it's a new, unused item. Since I haven't used it, it's in beautiful condition. The following is from the Amazon description: Product Dimensions: 37 depth x 37 width x 70 height mm Features: 3-second measurement, high precision ±0.5agtron, no preheating required, smartphone app integration, OTA remote upgrade support Material: Electronic components, plastic Style: Digital High-precision measurement: ±0.5Agtron accuracy, covering a measurement range of 0-150Agtron. Achieves a resolution of 0.1 through multi-wavelength light source and data fusion technology. Rapid measurement: Displays results within 3 seconds without preheating. Accurate measurement is possible even with small amounts of beans (18g) or grounds (5g). Smart features: Integrates with a smartphone app for detailed data analysis. Also supports OTA remote upgrades. Easy calibration: Comes with a dedicated calibration card for more accurate roast level measurement.